Journal
16TH INTERNATIONAL SCIENTIFIC CONFERENCE CHEMISTRY AND CHEMICAL ENGINEERING IN XXI CENTURY DEDICATED TO PROFESSOR L.P. KULYOV (CCE 2015)
Volume 15, Issue -, Pages 365-370Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.proche.2015.10.058
Keywords
L-glutamate; voltammetry; carbon-containing modified electrode; flavor enhancer; food
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In this paper the L-glutamate electrochemical behavior on a carbon-containing electrode modified with gold in simulated solutions by cyclic voltammetry have been studied. The analytical signal of glutamate reduction at the potential of -0.8 V in pH 9.19 has been found. It has been determined that the cathodic reduction of glutamate is irreversible and mainly controlled by diffusion in the reduction electrode process of glutamate. The conditions for glutamate determination in simulated solutions by voltammetry have been found. The plots of current versus concentration present a linear behavior from 3.2.10(-4) to 2.5 . 10(-3) M. The detection limit is 4.4 10(-5) M. The glutamate determination in simulated solutions has resulted in acceptable deviation from the stated concentration where relative errors are -2.7 to +2.6%. (C) 2015 The Authors. Published by Elsevier B.V.
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